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APH · Amphenol Corp /De/

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$154.45 +1.34 (+0.88%)
Market Cap
$377.56B
Shares
2.47B

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 2,329
Total Value: $12,883,707,634
Total Shares: 1,192,308,273

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 2,329 13F filers · Δ vs Mar 31, 2026
Top Holder
6.7%
Sep 2023 → Jun 2026 · range 6.7% – 90.0%
−45.3 pts
Top 5
27.0%
Sep 2023 → Jun 2026 · range 27.0% – 100.0%
−63.9 pts
Top 10
37.4%
Sep 2023 → Jun 2026 · range 37.4% – 100.0%
−61.3 pts
HHI
205
Sep 2023 → Jun 2026 · range 205 – 8,193
Broadly held−3,023

Quarterly Activity

vs Mar 31, 2026
New
371
Increased
981
Decreased
783
Sold Out
179
Unchanged
194
Holder count: +192
Institutional value: +7817.2%
Shares held: +2.3%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 2,385
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 820313 CUSIP 032095101 13F (30d) 1897 filings 1857 filers Visit website Investor relations